Subtract 18/90 from 49/4
1st number: 12 1/4, 2nd number: 18/90
49/4 - 18/90 is 241/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 4 × 45 = 180,
49/4 = 49 × 45/4 × 45 = 2205/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
18/90 = 18 × 2/90 × 2 = 36/180 - Subtract the two like fractions:
2205/180 - 36/180 = 2205 - 36/180 = 2169/180 - After reducing the fraction, the answer is 241/20
- In mixed form: 121/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/4-18/90 49/4-36/90 49/8-18/90 49/4-54/90 49/12-18/90 49/20-18/90 49/28-18/90